.a {
    width: 15vw;
    height: 4vw;
    font-size: 5vw;
}

.item {
    border: 1px gray solid;
    width: 2vw;
    height: 3vw;
    font-size: 2vw;
    padding-left: 1vw;
}

.contect {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    width: 18vw;

}